Pre-Alarm Indicators
Presentation
On a ComPacT NSX or PowerPacT H-, J-, and L-frame circuit breaker with MicroLogic 5, 6, or 7 trip unit, pre-alarms can be assigned to an available digital output for local indication. The pre-alarms that can be assigned to a digital output depend on the MicroLogic trip unit. The pre-alarm indicator can be configured using the EcoStruxure Power Commission software.
|
Pre-Alarm |
Compatible MicroLogic Trip Units |
|
|---|---|---|
|
Long-time protection Ir pre-alarm (PAL Ir) |
MicroLogic 5, 6, or 7 trip unit |
|
|
Earth-fault protection Ig pre-alarm (PAL Ig) |
MicroLogic 6 trip unit |
|
|
Earth-leakage protection IΔn pre-alarm (PAL IΔn) |
MicroLogic 7 trip unit |
|
For more information, refer to the following user guide in Related Documents.
- ComPacT NSX MicroLogic 5/6/7 Trip Units User Guide
- PowerPacT H-, J-, and L-Frame MicroLogic 5 or 6 Trip Units - User Guide
Compatible Devices
|
Range |
Minimum Hardware Configuration Required |
|---|---|
|
Fixed or withdrawable circuit breaker + MicroLogic 5, 6, or 7 trip unit |
Input/Output Assignment
The table below lists the possible assignment of the digital outputs, according to the predefined application selected on the IO module:
|
Inputs |
Predefined Application Selected |
||||||||
|---|---|---|---|---|---|---|---|---|---|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
|
|
Pre-alarm |
O1–O3 |
O3 |
O1, O2 |
O3 |
– |
– |
– |
– |
O1–O3 |